Antifriction-bearing.



E. H. WAHRHEIT. ANTIFBICTION BEARING. APPLICATION FILED MAR. 5, 191a.

,Patented Apr, 13, 1915.

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A ito rneys E. H. WAHRHEIT. ANTIFRICTION BEARING. APPLICATION FILED MAR-5, I913.

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A iljorneys Patented Apr. 13, 1915.

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EDWARD H. WAHRHEI'I, OF NEW YORK, N. Y.

ANTIFRICTION-BEARING.

Specification of Letters Patent.

Patented Apr. 13, 1915..

Application filed March 5, 1913. Serial No. 752,088.

To all whom it may concern Be it known that I, EDWARD H. VVAHR- HEIT, acitizen of the United States, residing in the city of New York, boroughof lrooklyn, county of Kings, and State of New York, have inventedcertain new and useful Antifriction-Bearings, of which the following isa specification.

This invention relates to improvements in anti-friction bearings, and,more particularly, to that class of bearings whereinthe revolving shaftor core of the bearingis supported on a plurality of solid units, thesame being of suitable shape such as spherical, ellipsoidal, or thelike.

The present invention embodies anti-fridtion units of particular form,means where'- by the wear of the units, incident to the operation, maybe compensated for by certain adjustable parts, thusallowing of maximumeiliciency after long continued use.

A salient feature of the invention resides in the employment ofsecondary bearing units, ,through which the wear, occasioned asaforesaid, may be taken up, these sec ondary units further operating tocarry any end thrust which the bearing might be sub- The bearing is,moreover, provided with suitable locking means which preclude anydisplacement of the parts after same have been properly adjusted.

In one of the'practical forms, the invention embodies an annularincasing ring threaded on its inner periphery for the reception, moreparticularly, of two exteriorly threaded rings which are adapted to bescrewed into the incasing ring from the opposite sides thereof. On theinner faces of these two rings are provided the complementary runs forthe bearing units and through the central apertures in either of saidrings extends the core of the bearing,

the same being provided with a circumfer ential run in which the bearingunits travel in carrying the weight of the shaft within the annularincasing ring. At either side of the bearing units are positionedannularly disposed secondary units, and these units are forced intointimate contact with the main bearing units by means of secondarybearing race. members which lie within the respective rings at eitherside of the bearing to engage the opposite ends of the secondary bearingunits and retain them in desired position.- v

The secondary bearing race members are properly held "in place and putunder the desired pressure by means of locking rings which screw intothe rings at the respective sides of the bearings, ahd these lastmentioned rings, in which are the bearing races of the bearingunitsgareheld in place by locking ringswhich screw into the inner threading onthe incasing ring.

Features of the invention, other than those referred to, will appearfrom the hereinafter detailed description and appended claims. g

in the accompanying drawings I have illustrated different practicalembodiments of theinventiombutthe constructions shown therein are to beunderstood as illustrative, only, and not as defining the limits of theinvention.

Figure 1 shows the application of the invention to an engine crankshaft, the parts being shown in central section. Fig. 2 is an endelevation of a single crank arm of the type shown in Fig. 1. Fig. 3 is aview showing the arrangement of the main bearing units and the manner inwhich the secondary bearing units cooperate with them. Figs. 4:, 5 and 6are diagrammatic views illustrating the positions which thesecondaryunits have to the main bearing units and the manner in whichthey operate on the ends thereof. Fig. 7 is an exterior face view of acertain locking member employed. Fig. 8 shows a tapered threaded pinwhich cooperates with said locking pin for expanding the same andsecuring it in fixed position. i

The present invention may be utilized in many different fields, but, insaid drawings,

I have shown the same as adapted for use on an engine crank shaft, and,more particularly, a crank shaft ofthe built-up type. In, the drawings,the two anti-friction bearings, at the outer ends of the two crank armsshown, are illustrated as being incorporated or built in the lower endof the connecting rods, while the bearings, which support thelongitudinal axis of the crank shaft, are shown as contained in annularrings which may be suitably supported in the usual pillow blocks, notshown.

For convenience and clearness in describing the various forms ofbearmgs'shown, I have, in Fig. 1, designated the different bearings,reading from leftto right, successively,

1., II., III, IV., and'V. Referring more particularly .to the bearingsdesignated I., III, and V., it will be noted that the three showingsillustrate three steps in the assembling of a bearing of one distincttype.

This type embodies an annular incasing ring A, which is threaded on itsinnerperiphery, as at a, to receive two rings, B and C, whicharecircumferentially threaded. On the inner faces of these rings B, C,are comple- Imentary runsb, c, for the bearing units D, and extendingthrough the incasing ring'A, coaxial therewith, and equal in length tothe breadth of said ring, is the core E, of the bearing. This core whichis provided with circumferentially disposed runs e, e, which cooperatewith the runs 6, c, forholding the bearing units D mproper position tocarry the loadto-which the bearing'issubjected. f In the orifice betweenthe interior periph-v cry of the bearing rings B, C, and the outercircumference ofthe sleeve E, auxiliary bearing units' 'F, of

v the roller variety, are positioned inthe'manner shown in Fig. 3. Theseauxiliary units are shaped on the side they contactwithl'the main unitsso as to alternatelyjfitflover and between .said main units (see Fig. HQand those that fit thereover may be made integral with said main units,de siredfOn their opposite sides, saidauxiliary units are shapedfsemi-sphesical so that they are adapted to travel .in the runs 9, inauxiliary bearing rings G, inserted from either side of the bearing intothe orifices aforesaidJ The auxiliary bearing rings'G are held againstdisplacement by fmeans 'of circumferentially threaded locking rings H(Figs; 7 and 8), which screw into interi'orly threaded portions on theinner peripheries of the. rings. B, C. lhese locking rings are in theform of a split ring, and, at the point where said ring is split, as ath, a threaded tap z', is provided, into which a tapered threaded to bescrewed, whereby the ring H isexpanded and thus locked against working Iloose. A locking ring J, similar in all respects, except size, to thering'H, is utilized for retainin the main bearing rings B, C,

the locking rings H, J

in place. oreover, aswell as the rings B, C, are provided withdepressions 7', on their outer faces, so that anadjlisting tool, su'chas a spanner, may be 111 rted to properly adjust the said parts.

this embodimentofthe invention, I utiballbearings, and, in order to-gainmaximum efiiciency and bearing surface to minimize wear, two rows ofthese bearing units arejemployed. It will be further noted, from v thedrawings, that the auxiliary bearing is in the form of a sleeve dualtype. pin I is adapted 'ignated B,

units are, preferably, substantially one-half the diameter of the mainbcarin units, so that they will be betteradapteg to alternately fitover, and between, said main bearings (see Fig. 4:). i

It will be manifest from the foregoing description, that, when thevarious parts of the anti-friction device are properly adjusted, andlocked in position, the core is free to revolve within its incasingparts, its

weight being sustained by the spherical units which are securely held inplace so that they will ride in the races b, c, in the rings B, C,

securely fixed on the bearing portions O of I the crank shaft. In theembodiments of the invention'illus- .ti'ated in the bearing units II.and IV., the

bearing parts are shown as incased directly within the open lower end ofan engine connecting rod K. These embodiments, II. and IV., embrace allthe essential features inherent in the aforedescribed type of bearingunit, except that the dual ball feature and the sleevelike core of thefirst mentioned type, are replaced in the latter style by'a single rowof elongated main bearing units,

and the core of said second style bearing is,

in reality, the revolving pin L. The oblate spheroidal or ellipsoidalunits D',"D of the IIth. and IVth. embodiments, respectively, arepreferred over the dual units, as practically the same result isaccomplished in a more efficient and positive manner. This is true' inView of the fact that, in these embodiments, the auxiliary units F, F engage the opposite sides of the same'row of.

units, insteadiofdifferent units, as in the Moreover, this improvedfeature is' provided without any loss of, if not an increase in, bearingsurface. In bearing II, the parts corresponding to B, C; G, g;

H; and J, j, in'types I, III., and V., are-des- C; G, g"; H; and J, j,re-

spectively, and the corresponding parts in hearing IV. are marked B G G9 H and J 9?, respectively.

- The application of the invention as herein shown" and described is toan .engine crank shaft and this application forms a distinct'feature ofthe present invention.

-The cores L, L, of the bearing devices II,

IV., at the lower ends of the connecting rods K, K, are so formed thattheyprotrude be.- yond the faces of said devices, as at Z, so that, whenthese projecting portions are tions Z, 0, filling pieces on, r bolt orother suitable securing means a, for retaining said filling pieces inproper position relative to the bifurcated ends of the crank; and boltsa passing through said filling pieces and projecting portions, andinclosed in the crank ends for rigidly securing the parts t0- gether.Moreover, said projecting portions, of the crank pins and shaftsections, are outwardly flared, as at P, and the ends of the cranks M,and filling pieces m, m, are complementarily cut away so as to furtherobviate any tendency to rack. This arrangement of elements provides abuilt-up crank shaft utilizing portions of its antifriction bearingdevices, and the whole is so simply assembled or disassembled, that anyworn or damaged part thereof may be readily replaced.

The anti-friction bearings which I have shown, while of great utility intheir application as herein set forth, are obviously well adapted tomany applications; 6. 9., they may be readily supported within hangersand thus utilized in carrying shafting, or they may be, with slightmodification, adapted toautomobile wheels or the like. It will,moreover, be obvious that the sleeve and in-. casing ring featuresshown, in connection with embodiments 1., 11., Hit, may be employed inconnection with any of the other embodiments shown. I, therefore, do notcare to limit myself to the specific forms of the invention hereinshown, to any greater extent than the state of the art may require.

Having thus fully described the invention, what I claim as new anddesire to secure by Letters Patent is 2-- 1. In an anti-friction device,a casing, an annular series of main anti-friction units annularlydisposed therein in such manner that each unit thereof will contact withits adjacent units, a plurality, of annularly disposed secondaryanti-friction units co-a-X- ially arranged with respect to the mainunits in such manner that each secondary unit will contact with itsadjacent secondary unit and with at least one of the main units, and

'inner and outer bearing elements between which the anti-friction unitstravel.

2. In an anti-friction device, a series of annularly disposed mainanti-friction units, twice as many secondary anti-frictionunits arrangedin an annular ring coaxial with respect to the main series and on atleast one side thereof, said secondary units being so proportioned andarranged that each successive secondary unit will contact with itsadjacent units and with at least one of the main units, and inner andouter l'iearing elements between which the anti-friction units travel.

3. In ananti-friction device, a series of annularly disposed mainanti-friction units, a series of annularly disposed secondaryanti-friction units of substantially one-half the size of the mainunits, said secondary units being so arranged that each secondary unitcontacts with its two adjacent secondary units and being so formed thatevery alternate secondary unit extends for ashort distance between eachadjacent pair of main units, and the remaining alternate secondary-unitsbeing shaped to conform to the contour of the main unit, whereby theyfit over the ends thereof, and inner and outer bearing elements betweenwhich the antifriction units travel. I

i. In an anti-fricti0n bearing, the combination of a housing, a pair ofexteriorly.

threaded rings adapted to screw into said housing from, the oppositesides thereof,

complementary runs in the inner faces of said rings, a bearing core, arun in said core, a series of main anti-friction units cooperating withthe runs the aforesaid rings and core, an annular series of secondaryunits equal in number to double that of the main series positionedco-aXia-l therewith, such a series being on either side of the mainunits in such manner that each secondary unit will contact with its twoadjacent secondary units and with at least one of the main units, andmeans whereby said series of secondary units are held in intimatecontact with said main units.

5. In an anti-friction device, an interiorly threaded housing, a pair ofexteriorly threaded main bearing rings adapted to be screwed into thehousing from the opposite sides thereof, complementary runs in theinterior faces of said rings, a core for the bearing, a run in 'saidcore, a series of main anti-friction units coiiperating with the runs insaid rings and core, in combination with an annularly disposed series ofsecondary anti-friction units arranged at either side of said mainseries, said secondary units being so shaped that the alternatesecondary unitsof each series extend in between the successive mainunits, and the remaining secondary units of each series conform to thecontour, and fit over the-ends, of their adjacent main bearing units, apair of seconda-ry bearing rings, of smaller diameter than the aforesaidmain bearing rings, adapted to be inserted into the housing from theopposite sides thereof, said secondary bearing rings having runs intheir inner' teriorly threaded adj listing rings adapted to In testimonywhereof I have signed mj thread into the main bearing rings from name tothis specification in the presence of either side of the bearing for thepurpose of two subscribing witnesses.

. retaining the secondary bearing units in en- EDWARD H. WAHRHEIT.gagement with the main series, andmeans Witnesses:

' for locking the main bearing rings and ad-' COIE ELIUS ZABRIsKIE,

Q justing rings'against Working loose. M. C. RODRIGUEZ.

